<?php

class SiteController extends BackEndController {

    /**
     * This is the default 'index' action that is invoked
     * when an action is not explicitly requested by users.
     */
    public function actionIndex() {
        // renders the view file 'protected/views/site/index.php'
        // using the default layout 'protected/views/layouts/main.php'
        $this->render('index');
    }

    /**
     * This is the action to handle external exceptions.
     */
    public function actionError() {
        if ($error = Yii::app()->errorHandler->error) {
            if (Yii::app()->request->isAjaxRequest)
                echo $error['message'];
            else
                $this->render('error', $error);
        }
    }

    /**
     * Displays the login page
     */
    public function actionLogin() {
        $this->layout = 'login';
        $model = new LoginForm();
        $model->loginType = 'Back';

        // if it is ajax validation request
        if (isset($_POST['ajax']) && $_POST['ajax'] === 'login-form') {
            echo CActiveForm::validate($model);
            Yii::app()->end();
        }

        // collect user input data
        if (isset($_POST['LoginForm'])) {
            $model->attributes = $_POST['LoginForm'];
            // validate user input and redirect to the previous page if valid
            if ($model->validate() && $model->login())
                $this->redirect(array('site/index'));
        }
        // display the login form
        $this->render('login', array('model' => $model));
    }

    /**
     * Logs out the current user and redirect to homepage.
     */
    public function actionLogout() {
        $roleAssigned = Yii::app()->authManager->getRoles(Yii::app()->user->id);
        if (!empty($roleAssigned)) { //checks that there are assigned roles
            $auth = Yii::app()->authManager; //initializes the authManager
            foreach ($roleAssigned as $n => $role) {
                if ($auth->revoke($n, Yii::app()->user->id)) //remove each assigned role for this user
                    Yii::app()->authManager->save(); //again always save the result
            }
        }
        Yii::app()->user->logout();
        $this->redirect(array('site/login'));
    }

}